connecticut shootings and possibility of higher taxes have people watching the bottom line, but here in the bay area consumer spending is following the normal trend. >> we had a spike black friday, a strong first two weeks of december, then it kind of let off and now it's back with a furry. >>reporter: a fury they hope translates to higher sales and holiday smiles. retailers count on the holiday shopping season for about 40% of yearly sales. >>> carolers in san francisco this morning. the they're collecting toys for children across the bay area. among the special appearances, the giant's world series trophy, santa, and the mayor. >> it's a great way to start christmas eve and wishing everyone a really merry christmas. >> you don't even have to go to the union square restaurant to donate. cabs are on call. just call them and they'll come to you and pick up donations. >>> how an emergency response falls into a deadly ambush. >>> how food allergies can lead to other problems at school. >>> how an extreme holiday house is turning the spirit of the season into scorn. we'll be right back.